<div>
	<div class="about">
		<a ui-sref="about.p1" ng-class="{active:
					$state.includes('about.p1')}">关于我们1</a>
		<a ui-sref="about.p2" ng-class="{active:
					$state.includes('about.p2')}">关于我们2</a>
		<a ui-sref="about.p3" ng-class="{active:
					$state.includes('about.p3')}">关于我们3</a>

	</div>

	<div ui-view></div>

</div>